Wall sprinkler-head.



C. VV. MOVVHY.

WALL spammen HEAD.

APPLICATION FILED FEB.18| 1918. L/2&. Slm,2 amfntd Doc. l?, 12H8.

2 SHEETSWSHEET l.

Mms

CHARLES W. MOWRY, 0F LYNN, MASSACHUSETTS, ASSIGNQR TO THE EPLE F THEETW-Uma al 'UNITED STATES AND TERRITORIES.

WALL SPRI-NKLEB-HEQ?.

atented Dec., 1li?, il

Application filed February 3.8, 1913. Serial No. 217,841.

To all whom it may concern.'

Be it known that l, CHARLES lV. Mownv, a citizen of the United States,residing at. Lynn, county of Essex, State of Massachusetts, haveinvented an ImprovementA in 7WallSprlnklcr-Heads, of which the followingdescription, in connection with the accompanying drawing, is aspecification, like characters ou the drawing representing like parts.

T his invention relates to improvements in sprinkler heads. These headsare operatively connected with a water supply under pressure. When afire occurs or it is desired to operate the heads a valve in the watersupply system is opened and the water flows therefrom out through theheads.

The object of this invention is to produce an improved sprinkler head.

This invention is particularly directed to the provision of a wallsprinkler head adapted for use to protect windows, side walls andsimilar parts of structures in which a sheet or curtain of water isadvantageous.

The invention also has for its object the protection both of a wallsurface whether provided with windows or not and a cornice so that allof the surfaces may be thoroughly wetted and with an economical use ofthe wat-cr.

@ther objects of the invention will more fully appear from the followingdescription and the accompanying drawings and will be particularlypointed out in the annexed claims.

ln the accompanying drawings, there has been disclosed a structuredesigned to carry out the objects of the invention, but it is to heunderstood that the invention is not confined to the exact featuresshown, as various changes may be made within the scope of the claimswhich follow. y f

Figure l is a view in elevation of a wall showing the invention invarious ways;

Fig. 2 is an enlarged sectional view of a wall showing a cornice andwindow with the device applied; 1

Fig. 3 is a front elevation of the improved sprinkler head;

Fig. 4 is a plan view of the same;

Fig. 5 is a sectional View on the line 5-5 of Fig. 3;

Fig. 6 is a sectional view on the line 6 6 of Fig. 3;

Fig. 7 is a diagrammatic view illustrating how the water is distributed.

The selected embodiment of the novel sprinkler` head here shown is oneparticularly adapted to deflect the water forced from 'the sprinklerhead outlet in a fan-like sheet. rlhis type of head and detiector isadvantageous in providing a uniform sheet of water flowing down the sideofabuilding or windows. rllhe novel structure of this head affords awater outlet and a delecting surface acting to causeV water dischargedthrough the outlet to pass olf the surface in a. fandikc sheet with thedischarge so concentrated in the central portion of the sheet that thesheet of water flowing down a surface located at a predetermineddistance from the outlet shall be of substantially uniform volume and inwhich the outlet is sufliciently large to insure a relatively slowvelocity of the sheet of water flowing down said surface.

The orifice is made relatively large depending upon the pressure or headof the water so that even with the lowest pressures which occur inpractice a suliicient volume of water may vrlow therethrough at arelatively slow velocity to provide for wetting the required area ofwall surface. rihis is particularly desirable at the top of tallbuildings where the pressures are frequently very low. y

llllhile this improved head may be formed of a plurality .ofcomplementary parts, it is preferable to form the head in one integralcasting, The nipple l is externally threaded to be received inengagement with a suitable itting on a supply pipe 2. Directcommunication with the pipe interior is thereby afforded and water underpressure in the pipe may be forced out through the sprinkler head outletlt is with the deiiection and distribution of this released water thatthis invention is concerned.

The outlet 3 of this improved head is made larger than those of otherexisting` heads and thus choking or clogging is practically eliminatedand a larger volume of water may be delivered '1n a given time and at alower velocit-y. The nipple l is provided with a base such as the squarehase ll. Cast integrally with this base are the parts which broadlycomprise the water deecting and controlling surfaces. rlhe deflectingsurface 5 may be described as substantially like a segment of a concavcdcone. rihe apen i3 ot this conodial segment is preferably not positionedimmediately under the outlet 3 hut is adjacentone side of the waterout-let so that the Water forced from the outlet will be etfectivelydelected by the surface 5 of the conodial segment.

l'n order to attain the desired deflection the Water in a uniform sheetthis seguro tallyy conodial surface 5 is provided with an elongatedpocket or depression 7. This depression longitudinally extends, asshown, substantially in a. medial line of the surface from a pointadjacent the vapex (5 to the hase ot the surface 5. rl`he width anddepth ot' the elongated depression lessens as it approaches the apexportion which portion .is substantially flattened and the depressiongradually merges into the flattened apex 6. The greatest width and depthof the depression l' is substantially opposite the longitudinal axis ofthe outlet. The major tuut tion of this medial depression is to aid ineffecting a concentration oi' the Water in the central portion orf thesheetl toi-ined by the Whole detiectingij surface ot the head.

ri`he hase of the conodial surface o terminates in a iange- 8 which ispreterahlbi' integrally formed and projects, in this selectedembodiment, at substantially a right angle to the axis of the surface 5.This angle may of course he varied within permissive limits but. aflange made at the angle indicated functions advantageously with thesegnientally conodial surface here shown.

Means are also provided on this novel sprinkler head to direct Waterforced troni the outlet and to govern the angle ot distribution, Aretaining- Wing 9 is formed on. each side ot the surface 5 extendingtroni the apex to the hase. Herein, these Wings i) are shown as integralWebs extending troni a corner ot' the square hase i to the hase iiangie8. En this particular head., these retaining wings 9 form an obtuseangle with each other. llfater, tending to he forced oil the sides ofthe conodial detlecting surface, is directed to the surface by theopposed Wings so that the;7 retain the wat-er and suostantially governthe width of the angle of distribution of the iian-like sheet of Waterresultant from this sprinkler head structure.

Sprinkler' heads of this general type are usually employed in series anda particular adaptation of these novel heads is indicated in Figs. 1 and:2, wherein a sprinkler system pipe 2 is supported along the Wall of abuild@ ing near the top. The section of wall shown is that of abuildingseveral stories high and having variant sized Windows and ablank wall port-ion. A sprinkler head ot this iinproved type ispositioned opposite each wiu dow such as the ordinary Windows 10 or inpairs adjacent larger Windows l1. Each ot' the sharp torceiul impact isohviated and sheet of water forming what is known as a Water-curtainliows down the wall.

By the employment ot this improved sprinkler head2i a greater voluineor' Water inay hetorced troni the outlet at a relatively slower velocitythan is common in other heads. rhe result herein is that the largervolume is discharged troni the deiieccing surface or' this head at arelatively slou.r velocity. The tan-like sheet impacts with the 1window,wall or other surface at a relatively slow velocitya the spatteringrebound a continuous sheet o water is formed to dow down the surface.Further? the above-noted concentration ot'- wa er in the central portionoic the surface 5 (broadly, the central one-third) causes the fan-likesheet discharged it'roin the frange 8 to be of greater thickness orvolume in the corresponding portion. lThis prevents the usual thinningout in the center of an impacted stream ot water so that the sheet ofwater, resultant troni this norel head and iiowing down the iinpactsuri'ace, is or" substantially uniform volume The invention comprisesthe use in connection with sprinkler heads for wetting the 100 wallsui-tace of a series ot' sprinkler heads d tor netting a cornice so thatthe an of the building may he nre, ruction illustrated the supply7 pipe2 is proif'ided with a series or cornice sprinklers 18, Lyn theadaptation illustrated and for convenience in pipingr these corniceswinkler heads are shown as located opposite the Wall sprinkler headsand 110 connected to the sarne fittings but it is olovieus that thisparticular arrangement in not essential and that the two sets orsprinklers need not necessarily loe connected to the pipen The sprinklerheads 13 are designed to project or jet the vater issuing therefromupwardly against the under surface ot the cornice and are so constructedas thoroughly to 'wet the cornice. or this purpose they 120inaypreerahly he ot the construction illustrated in another applicationSerial llo. Qlil tiled coincidently herewith by this inventor. soconstructed these cornice sprinklers project divergent sheets oit Water125 which are relatively long' and narrowr and at saine time a. smallamount ci Water di rectly up between the divergent sheets so that theentire surface is wetted with the in Fig. 1

maaien There is thus provided in the combination oi the two sets ofsprinkler heads a means -for thoroughly wetting the wall sur- :tace andthe projecting cornice of a building in a simple, elicient undeconomical manner.

ll'aving fully described my invention what claim as new and desire tosecure by Lettere Patent is:

l. l sprinkler head for wall surfaces co1n- @rising a water outlet, adellecting segmental concaved conoidal surface with its apex adjacentsaid outlet and its 'base terminating in a lange, a longitudinal medialdepression in said dellecting surface, and retaining wings at the sidesof said surface, the said surface with its depression and the saidliange and wings being so shaped, proportioned and, related as to causeWater dis charged through the outlet at a given volunie and velocity topass olf the flange in a fan-shaped sheet with the discharge soconcentrated in the central portion of the sheet that the sheet of waterflowing down a surtace located at a predetermined distance from theoutlet shall beef substantially uniiorni volume.

A sprinkler head such as set forth in claim l, in which the seid flangeextends at substantially a right angle to the axis of said surface.

il sprinkler head such as set forth in claim l, in which the apex ofsaid surface is adjacent and at one side of the water outlet.

il. A sprinkler head as set forth in claim l, in which the apexvo saidsurface is adjacent and at one side of the water outlet and in whichsaid flange extends et substantially n rightangle to the 'finie oit'Said surface. c c

sprinkler head such ns set forth in claim l, in which the said outlet isof suliciently large area. to secure a relatively slow velocity of thesheet oi' water at its impact with the seid surface whereby anysubstantial einonnt ot spat-tering or rebound is pre vented.

6. a sprinkler head Jlor wall surfaces, a water outlet having its areasniciently large to produce a relatively low velocity of flow at apredetermined distance from the outlet, and a del'iecting surface havinga configuration acting to cause water discharged through the out-let ata given volume and velocity to pass oil the surface in a fanshapcd sheetwith a discharge so concen trated in the central portion of the sheet asto produce a-Sheet of uniform volnine along a straight line at saidpredetermined distance from the outlet, Ywhereby the impact ot' thesheet with :i surnce located :it said predetermined distance from theoutlet shall take place at a relatively slow velocity and whereby thesheet oi' water ilowing down the impacted surface shall he ot suhstentially uni-torni volume.

ln testimony whereof', l have signed my narne to this speciiication.,

W. illilly.

